Global Patent Index - EP 0693569 B1

EP 0693569 B1 2000-05-31 - BAINITE ROD WIRE OR STEEL WIRE FOR WIRE DRAWING AND PROCESS FOR PRODUCING THE SAME

Title (en)

BAINITE ROD WIRE OR STEEL WIRE FOR WIRE DRAWING AND PROCESS FOR PRODUCING THE SAME

Title (de)

BAINITSTANGE ODER STAHLDRAHT ZUM DRAHTZIEHEN UND VERFAHREN ZU DEREN HERSTELLUNG

Title (fr)

BARRE DE BAINITE OU FIL D'ACIER POUR TREFILAGE ET PROCEDE DE PRODUCTION D'UN TEL FIL OU D'UNE TELLE BARRE

Publication

EP 0693569 B1 (EN)

Application

EP 94912060 A

Priority

  • JP 9400574 W
  • JP 7990093 A

Abstract (en)

[origin: WO9423083A1] A bainite rod wire or steel wire having an excellent workability in wire drawing and a process for producing the same. The wire contains on the weight basis 0.80-0.90 % of carbon, 0.10-1.00 % of manganese and 0.10-1.50 % of silicon; if necessary 0.10-1.00 % of chromium; not more than 0.02 % phosphorus and not more than 0.01 % of sulfur; and the balance consisting of iron and inevitable impurities. Further it has a tensile strength and a drawing rate as defined by the following formulae (1) and (2), respectively (1): TS </= 85x(C)+60 and (2): RA >/= -0.875x(TS)+158; wherein C represents carbon content (wt%), TS represents tensile strength (kgf/mm<2>), and RA represents drawing rate (%).

IPC 1-7 (main, further and additional classification)

C22C 38/18; C21D 8/06; C21D 9/52; C22C 38/08

IPC 8 full level (invention and additional information)

C21D 1/20 (2006.01); C21D 8/06 (2006.01); C21D 9/52 (2006.01); C22C 38/00 (2006.01); C22C 38/18 (2006.01)

CPC (invention and additional information)

C22C 38/00 (2013.01); C21D 1/20 (2013.01); C21D 8/06 (2013.01); C21D 9/525 (2013.01); C22C 38/18 (2013.01); C21D 2211/00 (2013.01); C21D 2211/002 (2013.01)

Designated contracting state (EPC)

BE DE FR GB IT

EPO simple patent family

WO 9423083 A1 19941013; DE 69424782 D1 20000706; DE 69424782 T2 20001123; EP 0693569 A1 19960124; EP 0693569 A4 19960306; EP 0693569 B1 20000531; US 5658399 A 19970819

INPADOC legal status


2014-08-29 [PG25 DE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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- Free text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

- Effective date: 20140405

2014-04-30 [BE20] BE: PATENT EXPIRED

- Owner name: *NIPPON STEEL CORP.

- Effective date: 20140406

2014-04-30 [REG GB PE20] PATENT EXPIRED AFTER TERMINATION OF 20 YEARS

- Expiry date: 20140405

2014-04-08 [REG DE R071] EXPIRY OF RIGHT

- Document: DE 69424782

2013-12-13 [REG FR CA] CHANGE OF ADDRESS

- Effective date: 20130913

2013-12-13 [REG FR CD] CHANGE OF NAME OR COMPANY NAME

- Owner name: NIPPON STEEL & SUMITOMO METAL CORPORATION, JP

- Effective date: 20130913

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2013-04-18 [REG DE R081] CHANGE OF APPLICANT/PATENTEE

- Owner name: NIPPON STEEL & SUMITOMO METAL CORPORATION, JP

- Free text: FORMER OWNER: NIPPON STEEL CORP., TOKIO/TOKYO, JP

- Document: DE 69424782

- Effective date: 20130227

2013-04-18 [REG DE R082] CHANGE OF REPRESENTATIVE

- Document: DE 69424782

- Representative's name: SCHWABE SANDMAIR MARX, DE

- Effective date: 20130227

2002-01-01 [REG GB IF02] EUROPEAN PATENT IN FORCE AS OF 2002-01-01

2001-05-16 [26N] NO OPPOSITION FILED

2000-07-13 [ET] FR: TRANSLATION FILED

2000-07-06 [REF] CORRESPONDS TO:

- Document: DE 69424782 20000706

2000-05-31 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

- Designated State(s): BE DE FR GB IT

2000-05-10 [ITF] IT: TRANSLATION FOR A EP PATENT FILED

- Owner name: BARZANO' E ZANARDO ROMA S.P.A.

1998-04-29 [17Q] FIRST EXAMINATION REPORT

- Effective date: 19980317

1996-03-06 [A4] SUPPLEMENTARY SEARCH REPORT

1996-03-06 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A4

- Designated State(s): BE DE FR GB IT

1996-01-24 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19951031

1996-01-24 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): BE DE FR GB IT